Prevent the outbreak of hemorrhagic disease of fish in autumn
Fish are easy to get fulminant hemorrhagic disease in autumn. the disease has the advantages of acute onset, rapid transmission, long epidemic time, high mortality and great loss. Once the disease is difficult to control and the disease is easy to repeat, households should enhance their awareness of prevention and prevent the occurrence of the disease.
First, fish species disinfection: fish species must be disinfected with 1%-2% salt water before entering the pond, and the bath time depends on the physique and temperature of the fish. When conditions permit, the fish species can be soaked with fulminant hemorrhagic disease vaccine.
Second, timely change of water and increase oxygen: keep the water quality fresh and change water frequently. If the condition is limited, it is inconvenient to change water, the whole pool can be sprinkled with raw lime slurry, and the aerator should be used reasonably at the same time.
3. Regular water disinfection and oral drug prevention: environmental protection drugs such as dibromohydantoin and bromochloroling can be used to disinfect the water body alternately every 10 to 15 days, and beneficial microbial preparations can be used to improve the water quality every 5 days after disinfection. In the feed mixed with appropriate amount of berberine hydrochloride, aquatic special erythromycin and other safety drugs, 5 days as a course of treatment, 1 ~ 2 courses of treatment per month.
Fourth, reasonable close culture and mixed culture: when the culture density is too high, it is necessary to catch and sparse culture in batches, maintain a reasonable culture density in the pond, and try not to let the water environment bear overloaded fish stocks.
Fifth, choose medium and high-grade feed, and reduce the use of feed raw materials (raw bran, corn, @ # @ 245mm, etc.) and low-grade feed.
Sixth, pay attention to pond hygiene: usually, weeds should be removed frequently and food farms should be cleaned, no residual bait should be left, and dead fish should be fished out in time and treated innocuously.
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Harvesting and processing of tortoise plate
The tortoise plate, also known as the tortoise shell, is the dry abdominal shell of the turtle family. The product has the function of nourishing yin and latent yang, tonifying kidney, nourishing blood and tonifying heart. It is used for hot flashes of yin deficiency, night sweats, convulsions of vulva injuries in the later stage of fever, soreness and weakness of waist and knees, collapse and leakage, hemorrhoids and other diseases. Turtles are produced in most parts of China, especially in Jiangsu, Zhejiang, Guangxi, Anhui, Hubei and Henan. The wild animal lives in many groups in rivers, lakes, lakes and ponds, and can be caught all year round. When the turtle is caught, it is dug from the tail to the head with a sharp knife, and then from the other side of the head.
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Brief introduction of the efficacy of Manni Alkali spermatin in killing Fish parasites
Mannichbasesingredient is a highly effective biological insecticide extracted from the roots and leaves of pure plant eucalyptus and made by scientific processing. People have known that eucalyptus has medicinal value more than 1000 years ago, especially in the rural areas of southwest China, its roots and leaves are usually soaked into solution to directly kill maggots and other pests. In recent years, relevant departments at home and abroad have conducted in-depth research to refine the preparation, which is recognized as broad-spectrum, high efficiency, low toxicity, easy degradation, no residue, no "three causes" and
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